Brussels | ITP-2025-1 | Pinky Benitez | Week 6 | Coursework/sprint 3 implement and rewrite

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -10,9 +10,18 @@
 function getAngleType(angle) {
   if (angle === 90) {
     return "Right angle";
+  } else if (angle < 90) {
+    return "Acute angle";
+  } else if (angle < 180) {
+    return "Obtuse angle";
+  } else if (angle === 180) {
+    return "Straight angle";
+  } else if (angle < 360) {
+    return "Reflex angle";
   }
-   // Run the tests, work out what Case 2 is testing, and implement the required code here.
-   // Then keep going for the other cases, one at a time.
+
+  // Run the tests, work out what Case 2 is testing, and implement the required code here.
+  // Then keep going for the other cases, one at a time.
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -50,14 +59,17 @@ assertEquals(acute, "Acute angle");
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
-// ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(obtuse, "Obtuse angle");
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
+const reflex = getAngleType(260);
+assertEquals(reflex, "Reflex angle");

Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -8,8 +8,20 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-  if (numerator < denominator) {
+  if (denominator === 0) {
+    // denominator cannot be zero.
+    return false;
+  }
+  if (numerator > 0 && numerator < denominator) {
+    //positive
+    return true;
+  }
+  if (numerator < 0 && Math.abs(numerator) < Math.abs(denominator)) {
+    //neg-pos value
     return true;
+  } else {
+    //improper.
+    return false;
   }
 }
 
@@ -46,14 +58,19 @@ assertEquals(improperFraction, false);
 // target output: true
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
-// ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
-// ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
 // What other scenarios could you test for?
+const zeroDenominator = isProperFraction(5, 0);
+assertEquals(zeroDenominator, false);
+
+const doubleNegativeFractionResult = isProperFraction(-5, -7);
+assertEquals(doubleNegativeFractionResult, true);

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -8,9 +8,17 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
+  let rank = card.slice(0, -1);
   if (rank === "A") {
     return 11;
   }
+  if (rank === "10" || (rank >= "2" && rank <= "9")) {
+    return Number(rank);
+  }
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+  throw new Error("Invalid card rank");
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,19 +47,42 @@ assertEquals(aceofSpades, 11);
 // When the function is called with such a card,
 // Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
 const fiveofHearts = getCardValue("5♥");
-// ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(fiveofHearts, 5);
 
 // Handle Face Cards (J, Q, K):
 // Given a card with a rank of "10," "J," "Q," or "K",
 // When the function is called with such a card,
 // Then it should return the value 10, as these cards are worth 10 points each in blackjack.
+const ten = getCardValue("10♦");
+assertEquals(ten, 10);
+
+const jack = getCardValue("J♦");
+assertEquals(jack, 10);
+
+const queen = getCardValue("Q♠");
+assertEquals(queen, 10);
+
+const king = getCardValue("K♥");
+assertEquals(king, 10);
 
 // Handle Ace (A):
 // Given a card with a rank of "A",
 // When the function is called with an Ace,
 // Then it should, by default, assume the Ace is worth 11 points, which is a common rule in blackjack.
 
+const ace = getCardValue("A♥");
+assertEquals(ace, 11);
+
 // Handle Invalid Cards:
 // Given a card with an invalid rank (neither a number nor a recognized face card),
 // When the function is called with such a card,
 // Then it should throw an error indicating "Invalid card rank."
+
+try {
+  getCardValue("Z♥");
+} catch (e) {
+  console.assert(
+    e.message === "Invalid card rank",
+    `Expected "Invalid card rank" but got "${e.message}"`
+  );
+}

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js

@@ -9,18 +9,18 @@ test("should identify right angle (90°)", () => {
 // REPLACE the comments with the tests
 // make your test descriptions as clear and readable as possible
 
-// Case 2: Identify Acute Angles:
-// When the angle is less than 90 degrees,
-// Then the function should return "Acute angle"
+test("should identify acute angle(45°)", () => {
+  expect(getAngleType(45)).toEqual("Acute angle");
+});
 
-// Case 3: Identify Obtuse Angles:
-// When the angle is greater than 90 degrees and less than 180 degrees,
-// Then the function should return "Obtuse angle"
+test("should identify obtuse angle(120°)", () => {
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+});
 
-// Case 4: Identify Straight Angles:
-// When the angle is exactly 180 degrees,
-// Then the function should return "Straight angle"
+test("should identify straight angle(180°)", () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 
-// Case 5: Identify Reflex Angles:
-// When the angle is greater than 180 degrees and less than 360 degrees,
-// Then the function should return "Reflex angle"
+test("should identify reflex angle(260°)", () => {
+  expect(getAngleType(260)).toEqual("Reflex angle");
+});

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js

@@ -6,8 +6,14 @@ test("should return true for a proper fraction", () => {
   expect(isProperFraction(2, 3)).toEqual(true);
 });
 
-// Case 2: Identify Improper Fractions:
+test("should return false for an improper fraction", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+});
 
-// Case 3: Identify Negative Fractions:
+test("should return true for negative fraction", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+});
 
-// Case 4: Identify Equal Numerator and Denominator:
+test("should return false for equal fraction", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js

@@ -7,7 +7,36 @@ test("should return 11 for Ace of Spades", () => {
   expect(aceofSpades).toEqual(11);
 });
 
-// Case 2: Handle Number Cards (2-10):
-// Case 3: Handle Face Cards (J, Q, K):
-// Case 4: Handle Ace (A):
-// Case 5: Handle Invalid Cards:
+test("should return card value for number cards", () => {
+  const fiveofHearts = getCardValue("5♥");
+  expect(fiveofHearts).toEqual(5);
+});
+
+test("should return 10 for 10 card", () => {
+  const ten = getCardValue("10♦");
+  expect(ten).toEqual(10);
+});
+
+test("should return 10 for jack card", () => {
+  const jack = getCardValue("J♦");
+  expect(jack).toEqual(10);
+});
+
+test("should return 10 for queen card", () => {
+  const queen = getCardValue("Q♠");
+  expect(queen).toEqual(10);
+});
+
+test("should return 10 for king card", () => {
+  const king = getCardValue("K♥");
+  expect(king).toEqual(10);
+});
+
+test("should return 11 for the ace cards", () => {
+  const ace = getCardValue("A♥");
+  expect(ace).toEqual(11);
+});
+
+test("should throw an error for invalid card rank", () => {
+  expect(() => getCardValue("Z♥")).toThrow("Invalid card rank");
+});